Fisher (14-1, 12 KOs) will face Pirotton (12-2, 6 KOs) at Copper Box Arena live on Sky Sports in what will be his third headline fight at the east London venue.

“The Romford Bull” signed for Zuffa last month and was immediately earmarked to headline Zuffa Boxing 11 in a 10-round clash against an unconfirmed opponent.

But now a deal has been reached for the 27-year-old to face Liege native Pirotton, who has never been dropped over the course of his seven-year, 14-fight career.

This will also be Pirotton’s first outing in England after spending the majority of his career in Belgium and the US. He was also part of the WBC’s Grand Prix of Boxing, where he lost on points in the round of 32.

Fisher, meanwhile, will be looking to make a statement in the first fight of his new deal, which comes nine months after his most recent fight, when he stopped the overmatched Ivan Balaz in four.

Before that, Fisher suffered the first defeat of his career when he was stopped by Dave Allen in the fifth round of their clash at the Copper Box, five months after he had controversially beaten the White Rhino via split decision in Riyadh.

On September 26, Fisher returns to the Copper Box for the first time since that crushing defeat. He said: "I can't wait to be back at the Copper Bosh on September 26 and bring another huge night of boxing to London.

“Bull Army, get ready. because it's going to be a fantastic show. Pirotton is an experienced, powerful heavyweight who can't be taken lightly."

Pirotton, whose last outing was a third-round stoppage of Jiovani Sheik on August 2, said: "I have been working towards an opportunity like this my entire career, and the time has come. I know it’s going to be a massive crowd of Johnny Fisher fans, but I’ll be ready. Respect to Johnny and the Romford Bull Army, but he’s in for a tough night.”